Cellular and Transcriptional Responses of Crassostrea gigas Hemocytes Exposed in Vitro to Brevetoxin (PbTx-2)
Abstract: Hemocytes mediate a series of immune reactions essential for bivalve survival in the environment, however, the impact of harmful algal species and their associated phycotoxins upon bivalve immune system is under debate. To better understand the possible toxic effects of these toxins, Crass...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.388.2934 2023-05-15T15:57:37+02:00 Cellular and Transcriptional Responses of Crassostrea gigas Hemocytes Exposed in Vitro to Brevetoxin (PbTx-2) Danielle F. Mello Eliza S. De Oliveira Renato C. Vieira Erik Simoes Rafael Trevisan Alcir Luiz Dafre Margherita Anna Barracco The Pennsylvania State University CiteSeerX Archives 2012 http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.388.2934 http://www.mdpi.com/1660-3397/10/3/583/pdf/ en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.388.2934 http://www.mdpi.com/1660-3397/10/3/583/pdf/ Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.mdpi.com/1660-3397/10/3/583/pdf/ text 2012 ftciteseerx 2016-09-18T00:40:12Z Abstract: Hemocytes mediate a series of immune reactions essential for bivalve survival in the environment, however, the impact of harmful algal species and their associated phycotoxins upon bivalve immune system is under debate. To better understand the possible toxic effects of these toxins, Crassostrea gigas hemocytes were exposed to brevetoxin (PbTx-2). Hemocyte viability, monitored through the neutral red retention and MTT reduction assays, and apoptosis (Hoechst staining) remained unchanged during 12 h of exposure to PbTx-2 in concentrations up to 1000 µg/L. Despite cell viability and apoptosis remained stable, hemocytes incubated for 4 h with 1000 µg/L of PbTx-2 revealed higher expression levels of Hsp70 (p < 0.01) and CYP356A1 (p < 0.05) transcripts and a tendency to increase FABP expression, as evaluated by Real-Time quantitative PCR. The expression of other studied genes (BPI, IL-17, GSTO, EcSOD, Prx6, SOD and GPx) remained unchanged. The results suggest that the absence of cytotoxic effects of PbTx-2 in Crassostrea gigas hemocytes, even at high concentrations, allow early defense responses to be produced by activating protective mechanisms associated to detoxificationMar. Drugs 2012, 10 584 Text Crassostrea gigas Unknown |
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Abstract: Hemocytes mediate a series of immune reactions essential for bivalve survival in the environment, however, the impact of harmful algal species and their associated phycotoxins upon bivalve immune system is under debate. To better understand the possible toxic effects of these toxins, Crassostrea gigas hemocytes were exposed to brevetoxin (PbTx-2). Hemocyte viability, monitored through the neutral red retention and MTT reduction assays, and apoptosis (Hoechst staining) remained unchanged during 12 h of exposure to PbTx-2 in concentrations up to 1000 µg/L. Despite cell viability and apoptosis remained stable, hemocytes incubated for 4 h with 1000 µg/L of PbTx-2 revealed higher expression levels of Hsp70 (p < 0.01) and CYP356A1 (p < 0.05) transcripts and a tendency to increase FABP expression, as evaluated by Real-Time quantitative PCR. The expression of other studied genes (BPI, IL-17, GSTO, EcSOD, Prx6, SOD and GPx) remained unchanged. The results suggest that the absence of cytotoxic effects of PbTx-2 in Crassostrea gigas hemocytes, even at high concentrations, allow early defense responses to be produced by activating protective mechanisms associated to detoxificationMar. Drugs 2012, 10 584 |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Danielle F. Mello Eliza S. De Oliveira Renato C. Vieira Erik Simoes Rafael Trevisan Alcir Luiz Dafre Margherita Anna Barracco |
spellingShingle |
Danielle F. Mello Eliza S. De Oliveira Renato C. Vieira Erik Simoes Rafael Trevisan Alcir Luiz Dafre Margherita Anna Barracco Cellular and Transcriptional Responses of Crassostrea gigas Hemocytes Exposed in Vitro to Brevetoxin (PbTx-2) |
author_facet |
Danielle F. Mello Eliza S. De Oliveira Renato C. Vieira Erik Simoes Rafael Trevisan Alcir Luiz Dafre Margherita Anna Barracco |
author_sort |
Danielle F. Mello |
title |
Cellular and Transcriptional Responses of Crassostrea gigas Hemocytes Exposed in Vitro to Brevetoxin (PbTx-2) |
title_short |
Cellular and Transcriptional Responses of Crassostrea gigas Hemocytes Exposed in Vitro to Brevetoxin (PbTx-2) |
title_full |
Cellular and Transcriptional Responses of Crassostrea gigas Hemocytes Exposed in Vitro to Brevetoxin (PbTx-2) |
title_fullStr |
Cellular and Transcriptional Responses of Crassostrea gigas Hemocytes Exposed in Vitro to Brevetoxin (PbTx-2) |
title_full_unstemmed |
Cellular and Transcriptional Responses of Crassostrea gigas Hemocytes Exposed in Vitro to Brevetoxin (PbTx-2) |
title_sort |
cellular and transcriptional responses of crassostrea gigas hemocytes exposed in vitro to brevetoxin (pbtx-2) |
publishDate |
2012 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.388.2934 http://www.mdpi.com/1660-3397/10/3/583/pdf/ |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
http://www.mdpi.com/1660-3397/10/3/583/pdf/ |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.388.2934 http://www.mdpi.com/1660-3397/10/3/583/pdf/ |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766393287194705920 |